Surface enhanced raman spectrosscopy (SERS)has been used to studey the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid ,sulphuric acid and perchloric acid respectively or an...Surface enhanced raman spectrosscopy (SERS)has been used to studey the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid ,sulphuric acid and perchloric acid respectively or any two of them.It was found that these different anions can be induce-coadsorbed simultaneously on the silver surface through the protonated amino group of TU in the mixed acids ysstem.The coadsorption ability of the anions are in the order of So>NO?CLO at the potentials of at the potentials of The stability of TU on the surface of Agelectrode depends not only on the electrode potential but also on the nature of electrolyte anions coadsopbed.展开更多
A study of some sulfonylurea molecules with consideration of water molecules as its solvent was undertaken. The influence of the water molecules on the structure-activity relationship of the 35 sulfonylurea molecules ...A study of some sulfonylurea molecules with consideration of water molecules as its solvent was undertaken. The influence of the water molecules on the structure-activity relationship of the 35 sulfonylurea molecules was discussed . By supper-imposition of structural sulfonyl molecules, a molecular RMS was correlated with pI50, which denotes that the configuration difference in water solution is one of the reasons which causes the difference in bioactivity.展开更多
The title compound in monohydrate was prepared from aminoiminomethanesulfinic aicd by H 2O 2 oxidation in aqueous sulfuric acid solution. The compound is unstable in moisture, especially in acid atmosphere.
A series of 1 substituted phenoxyacetyl 4 aroyl thiosemicarbazides were synthe sized by reaction of aroylisothiocyanate with (substituted)phenoxyacetic acid hydrazides under solid liquid phase transfer catalysis condi...A series of 1 substituted phenoxyacetyl 4 aroyl thiosemicarbazides were synthe sized by reaction of aroylisothiocyanate with (substituted)phenoxyacetic acid hydrazides under solid liquid phase transfer catalysis condition. The preliminary bioassay results showed that some of the compounds have good antibiotic activity and plant growth regulation activity. The compounds were characterized by elemental analysis, IR and 1H NMR.展开更多
文摘Surface enhanced raman spectrosscopy (SERS)has been used to studey the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid ,sulphuric acid and perchloric acid respectively or any two of them.It was found that these different anions can be induce-coadsorbed simultaneously on the silver surface through the protonated amino group of TU in the mixed acids ysstem.The coadsorption ability of the anions are in the order of So>NO?CLO at the potentials of at the potentials of The stability of TU on the surface of Agelectrode depends not only on the electrode potential but also on the nature of electrolyte anions coadsopbed.
文摘A study of some sulfonylurea molecules with consideration of water molecules as its solvent was undertaken. The influence of the water molecules on the structure-activity relationship of the 35 sulfonylurea molecules was discussed . By supper-imposition of structural sulfonyl molecules, a molecular RMS was correlated with pI50, which denotes that the configuration difference in water solution is one of the reasons which causes the difference in bioactivity.
文摘The title compound in monohydrate was prepared from aminoiminomethanesulfinic aicd by H 2O 2 oxidation in aqueous sulfuric acid solution. The compound is unstable in moisture, especially in acid atmosphere.
文摘A series of 1 substituted phenoxyacetyl 4 aroyl thiosemicarbazides were synthe sized by reaction of aroylisothiocyanate with (substituted)phenoxyacetic acid hydrazides under solid liquid phase transfer catalysis condition. The preliminary bioassay results showed that some of the compounds have good antibiotic activity and plant growth regulation activity. The compounds were characterized by elemental analysis, IR and 1H NMR.
